Origin OB-36+ Soho aluminium bifold doors in a contemporary architects' studio with industrial design language

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Origin Bifold Doors — Buckinghamshire & Berkshire

British-engineered aluminium bifolds across three Origin systems. OB-36+ is the ultra-slim flagship with a 36 mm sightline and whole-window U-values to 0.78 W/m²K. OB-49 is the 49 mm mid-tier. OB-72 is the 72 mm system for the largest or wind-loaded openings. All PAS 24 certified, all made in Origin's High Wycombe factory. Vitrum Solutions installs the Origin bifold range across Buckinghamshire, Berkshire, Oxfordshire, Surrey and Hampshire.

Origin Bifold Specifications

Systems

OB-36+ · OB-49 · OB-72

Sightlines

36 mm · 49 mm · 72 mm

Best Uw

0.78 W/m²K (OB-36+ slim with thermal upgrade)

Security

PAS 24, Secured by Design configurations

The 3 Origin Bifold Systems

OB-36+ Soho, the ultra-slim flagship External Door

Origin's flagship External Door, shipped in the Soho design language: a Manhattan-inspired industrial, modern, magnificent aesthetic that combines steel-look design with aluminium thermal performance. 36 mm sightline for maximum glass. Individual door leaves between 325 mm and 1,000 mm wide and up to 2,376 mm high. PAS 24:2022 certified. 2025 Future Homes Standard compliant for thermal efficiency. The premium choice on contemporary new builds and architect-led extensions where the closed door needs to disappear visually.

OB-49, the 49 mm mid-tier bifold

Origin's middle bifold tier. 49 mm sightline gives a more substantial frame line than the OB-36+, useful where the architectural style is contemporary-but-not-minimal, where the build budget sits below the OB-36+ premium, or where the opening is overcoming greater wind exposure and the thicker frame is called for. PAS 24 certified, full Origin hardware ecosystem, made in High Wycombe.

OB-72, the 72 mm system

Origin's wider 72 mm bifold system for projects that need the heavier-frame engineering envelope. 72 mm sightline. The choice for the largest sashes, highest wind-load exposures, and projects where the build programme has been spec-locked around OB-72 for years. Same PAS 24 spec, same up-to-20-year Origin guarantee, same UK manufacture.

Four External Door configurations: Single, French, Bi-fold, Corner

Origin's External Door supports four configuration types per the Contemporary Collection brochure: Single (one hinged leaf), French (double-leaf hinged), Bi-fold (concertina stacking) and Corner (90-degree external corner opening). The exact panel count and overall span for your opening is confirmed at the survey stage.

Family-centric safety features

Beyond PAS 24 security, the External Door is designed with family-centric safety in mind: finger-safe gaskets to prevent pinching, magnetic catches that hold the door open, and optional opening restrictors and low thresholds for elderly or wheelchair-accessible homes. These features come from Origin's in-house R&D priority on safety alongside security.

Up to 20-year Origin frame guarantee

Origin's commercial signature: a guarantee of up to 20 years on the aluminium frame. Sits alongside our own 10-year FENSA-registered, CPA insurance-backed installation guarantee. The combined cover is one of the strongest in the UK premium market.

Origin External Doors in real homes

OB-36+ Soho carries Manhattan-inspired industrial design language: steel-look aesthetic, ultra-slim 36 mm sightlines, expansive glass. The standard OB-72 system delivers the same engineering pedigree in a wider 72 mm frame for the largest openings.

Origin OB-36+ Soho External Doors in a contemporary apartment living space with industrial design language
OB-36+ Soho · Apartment living, industrial design
Origin OB-36+ Soho External Doors detail showing the slim 36 mm aluminium frame and steel-look aesthetic
OB-36+ Soho · Frame detail, 36 mm sightline
Origin OB-36+ Soho External Doors open onto a contemporary residential setting with industrial-style framing
OB-36+ Soho · Open configuration
Origin OB-72 standard aluminium bifold doors open to a residential garden from a contemporary living room
OB-72 standard · Residential rear extension

Hardware: handle finishes for the OB-36+ Soho

The OB-36+ Soho ships with Origin's Signature Knurled handle as standard. Antique Brass complements warm wood floors and natural materials; Brushed Black suits the industrial steel-look aesthetic. Both available in six finishes total across the range.

Origin Signature Knurled External Door handle in Antique Brass finish

Signature Knurled — Antique Brass

Warm gold tone with recessed knurled grip pattern, complements wood-floor interiors

Origin Signature Knurled External Door handle in Brushed Black finish

Signature Knurled — Brushed Black

Deep matt black with brushed metal texture, the natural pairing for Soho industrial design

Get a free quote for Origin Bifold Doors

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Origin bifold doors across Buckinghamshire & Berkshire

Vitrum Solutions installs Origin bifold doors throughout Buckinghamshire and Berkshire, including Beaconsfield, Gerrards Cross, Amersham, Marlow, Windsor, Ascot and Maidenhead. Origin manufactures the OB-36+, OB-49 and OB-72 at its own factory in High Wycombe, Buckinghamshire, within our service region, for short lead times on local installations. Every install is FENSA registered with a 10-year CPA insurance-backed guarantee alongside Origin's up-to-20-year frame guarantee.

Origin Bifold — Frequently Asked Questions

What is the difference between OB-36+, OB-49 and OB-72?

All three are premium Origin aluminium bifolds, all PAS 24 certified, all made in Origin's High Wycombe factory. The difference is the sightline: the visible frame thickness when the bifold is closed. OB-36+ has a 36 mm sightline (Origin's ultra-slim flagship, Uw to 0.78 W/m²K with thermal upgrade), OB-49 has a 49 mm sightline (middle tier), OB-72 has a 72 mm sightline (used where heavier-frame engineering is required). Choose OB-36+ where the architectural priority is unbroken visual glass; OB-49 in the middle of the range; OB-72 for the largest or wind-loaded openings.

How does Origin bifold compare to Cortizo bifold?

Both are premium aluminium bifolds with comparable thermal performance and security spec. Origin's distinguishing strength is UK manufacture (High Wycombe), short lead times and the up-to-20-year frame guarantee. Cortizo's distinguishing strength is the slim premium Bi-fold Plus Door with its 110 mm reduced central junction (visually slimmer central interlock between leaves). Where the architect has specified one we install that; where the brief is open we walk you through both at the survey stage. Side-by-side comparison: /blog/cortizo-vs-schuco.

What configurations does the Origin External Door support?

Origin's External Door supports four configuration types per the Contemporary Collection brochure: Single (one hinged leaf), French (double-leaf hinged opener), Bi-fold (concertina-stacking multi-leaf) and Corner (90-degree external corner opening). The exact panel count, leaf widths, stacking direction and overall span for your opening are confirmed at the survey stage based on the architectural brief.

What U-values do Origin bifolds achieve?

Origin's bifold range achieves whole-window U-values from as low as 0.78 W/m²K on the OB-36+ with the thermal upgrade, comfortably exceeding the Approved Document L 1.4 W/m²K maximum for replacement doors. The PDF brochure quotes a Collection-level U-value range; per-system attribution to OB-49 and OB-72 is confirmed at the survey stage. Specific Uw is calculated per opening based on the chosen system, glazing unit, frame size and thermal spec at quote stage.

Can I get Origin bifolds in any RAL colour?

Yes, the full RAL palette. Bifold doors are the most common Contemporary Collection product specified in dual-colour: a dark anthracite or bronze exterior to match a contemporary garden facade, white or cashmere on the interior to recede into the kitchen palette. The OB-36+, OB-49 and OB-72 sightlines all support the same RAL range. Powder-coated at Origin's 10-stage Bicester facility on the aluminium substrate, so the finish does not chalk or peel even on full-south exposures.

What is the Origin lead time on a bifold?

Origin's UK manufacture (High Wycombe, Buckinghamshire) gives the range meaningfully shorter lead times than imported European premium aluminium. Exact times depend on the system, the colour and the panel count. On standard configurations, Origin's lead time is typically a fraction of the imported alternatives, confirmed at quote stage. This is the single biggest commercial reason architects specify Origin over Cortizo or Schuco where the build programme is tight.

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